Proportional-feed device for filters.



WamEssE 2- W. 7(

E. E. HARPER V PROPORTIONAL FEED DEVICE FOR .FILTERS.

THE COLUMBIA FLANOORAPN co-. \VASHINGTON. u. c.

E. E. HARPER.

PROPORTIONAL FEED DEVICE FOR FILTERS. V

1 qlfl yqgwn APPLICATION FILED OCT- 21, I915- Patented June 20, 3 SHEETS-SHEET 2.

W U T M E V W rmEssm WWW an/97ml 'n-m conumsm PLANOGRAPH co., WASHINGTIJN, n. c.

"E. E. HARPER. PROPORTIONAL FEED DEVICE FOR FILTERS.

APPLICATION FILED OCT. 2h I915.

Patented June 20, 1916.

3 SHEETS-SHEET 3.

IlIIIIIIlI/IIIQIIIIl/l/l' THE COLUMBIA PLANOGRAPH co., WASHINGTON, D. C-

ELMER. E. HARPER, 0F Kansas CITY, MIssoUaI.

PROPORTIQNAL-FEED DEVICE FOR FILTERS.

Application filed October 21, 1915.

To all whom it may concern:

Be it known that I, ELMER E. HARPER, a citizen of the United States, and resident of Kansas City, in the county of Jackson and State of Missouri, have invented a new and useful Improvement in Proportional- Feed Devices for Filters; and I do hereby declare thefollowing to be a full, clear, and exact description thereof.

My invention relates to a proportional liquid feed device, such as is adapted for use in connection with filters for feeding chemicals into the water proportionately to the amount of water or liquid to be treated.

In the accompanying drawings, Figure 1 is an elevation, partly sectional, of my improved apparatus; Fig. 2 is a plan view; Fig. 3 is a sectional view of a portion of the coagulating-basin; Fig. 4 is a cross-section of the oscillating-tank and the receiving funnel; Fig. 5 is a longitudinal section of the oscillating-tank; Fig. 6 is a top view of the outer end of the delivery pipe of the oscillating-tank; Fig. 7 is an enlarged crosssection on the line 7-7 Fig. 4. 1

In the drawings, the numeral 2 designates the oscillating-tank mounted on the pedestal 2, said oscillating-tank being trunnioned on ball bearings 2 so as to reduce the power required to oscillate said tank, Connected to the tank 2 is the discharge pipe 3, provided at its outer end with the adjustable orifice sleeve 4, which controls the orifice 4 The sleeve 4 is secured in position by the set-screw 4 and when once the size of the orifice has been determined, the sleeve is fixed in this position by the set-screw) 'A pointer 4 is connected with the sleeve 4, and said pointer works in connection with the scale 4 on the pipe 3, so that by fixing the pointer at the proper point on the scale;

the size of the orifice is determined and the amount of liquid to be discharged there- Specification of Letters Patent.

Patented June 20, 1916.

Serial No. 57,086.

a constant level 9 is maintained in the oscillating tank.

A receiving funnel 10 collects the chemical discharge of the orifice 4 when the oscillating tank is tilted, and delivers the liquid by. the pipe 11 into the liquid 12 to be treated in the coagulating basin 14. The pipe 13 delivers the raw-water to the coagulating basin 14, and this supply of water is controlled by the valve 15 in the pipe 13. A float 16 in the coagulating basin 14 is connected by the rod 16 to the valve 15, and said float maintains a constant water-level in the coagulating basin 14.

An orifice-plate 17 is fastened to the outlet of the pipe 13, which provides a means to determine the rate of flow of liquid into the coagulating basin through the pipe 13. Adjacent to the orifice-plate 17 is the pipe 18, which is tapped into the pipe 13, and is connected at its other end with the floattube 19, thereby maintaining in said floattube a water-head regulated by the pressure over the orifice-plate 17. In other words, the orifice-plate acts to check the discharge of liquid from the pipe 13, and the head under which the liquid is discharged through the orifice-plate is communicated to the liquid in the float tube 19 so that the water level in said float tube 19 varies directly with the head under which the liquid is discharged through the orifice-plate 17. Within the float-tube 19 is the float 23, which is connected to the cable 20, said cable passing over the pulleys 21 and 22, and is connected to the outer end of'the discharge-pipe 3 of the oscillating-tank 2. In

this manner, the motion of float 23 is transferred to the discharge-pipe 3, and the travel of said float corresponds exactly to the head on the orifice-plate 17, or the head under which water is delivered to the coagulating-basin 14.

The movement of the discharge-pipe 3 causes the tilting of the tank 2 and a discharge of the liquid from the orifice 4 into the receiving funnel 10, whence the chemical flows by the pipe 11 into the coagulating basin 14, or preferably is discharged directly over the pipe 13 to miX with the water overflowing from the orifice 17 into the coagulating-basin 14. V The motion of dischargepipe 3 causes an increase or decrease of head under which the chemical is discharged through the orifice 4 and this head under which the chemical is discharged is always proportional to the head under which the liquid to be treated is supplied to the coagulating-basin through the orifice-plate 17.

7 Consequently, the chemical is fed in proportion to'the amount of liquid to be treated and delivered by the pipe 13 to the coagulating-basin 14. Should the fiow of liquid into the coagulating-basin through the ori-' fice-plate 17 be stopped, the head under which the chemical is discharged through the orifice on the tilting tank will be reduced to zero and the flow of chemical will cease.

-By my device, I provide for accurately feeding liquid chemicals proportionately to'the amount of Water or liquid to be' treated, and the device operates automatically'so that when once the parts have been properly adjusted, no further attention need be paid tothe feeding of the chemical.

*What I claim is: a l

'1.'In a liquid-feeding device, the combination of a tilting r'eceptacle, means for I supplying liquid thereto, said receptacle havinga dischargeorifice, a receptacle for I the water to be treated, a supply-pipe exnections between said float and said tilting tending into s aid last named receptacle, a float-controlled valve in said supply-pipe, said supply-pipe having an orifice-plate, a float-chamber, a float in said chamber, conreceptacle, and connections between said supply-pipe and said float-chamber.

2. In a liquid-feeding device, 'the combination of a tilting receptacle, meansfor' supplying liquid thereto, adischarge-pipe connected to said tilting receptacle having means operated by the head on said orificeplate to tiltsaid tilting-receptacle. '3. In liquid-feeding device, the combination of .a tilting-receptacle, means 7 for supplying liquid thereto, a discharge-pipe connected to saidreceptacle, said discharge 7 Copies of this patent may be obtained for pipe having an orifice, an adjustable orificesleeve on said pipe, a receptacle for the water to be treated, means for conveying the liquid discharged from said tilting receptacle to the water to be treated, a supply-pipe for conveying water to be treated to said second-named receptacle, said supply-pipe having an orifice-plate controlling the discharge outlet above the level of the liquid in said receptacle, a float-chamber,a pipe connecting said float-chamber with said supplypipe, a float in said chamber, and connections between said float and the dischargepipe of said tilting receptacle.

4. In a liquid-feeding device, the combination of a tilting receptacle, means for supplying liquid thereto, said receptacle having a discharge orifice, a receptacle for the water'to be treated, a float-chamber, a float therein, connections between said float and said tilting receptacle, means for admitting water to said receptacle for water to be treated under pressure whereby a head above the level ofthe liquid in said lastnamed receptacle is created, and means for transmitting said head to said float-chamber.

5. In a liquid-feeding device, the combination of a tilting receptacle, means for supplying liquid thereto, means for maintain ing liquid in said receptacle at a constant level, said receptacle having a movable discharge orifice, 'a receptacle for the water to be treated, a float-chamber, a float therein, connections between said float and said tilting receptacle whereby the movement ot the float is communicated to the orifice on the tilting receptacle, means for admitting liquid to'the receptacle in which it is to be treated under pressure sufiicient to create a head greater than the normal level of the liquid in said receptacle and means for transmitting said head to the said floatchamber. e I

In testimony whereof, I the said ELMER E. Han'rnighave hereunto set my hand.

, ELMER E. HARPER.

, Witnessesr' JOHN B. GAGE, GONGER B. SMITH.

fivefcents each, byaddressing the Commissioner of Patents,

Washington, D. G." 

